Titanium:
http://www.ehow.com/about_6514874_titanium-used-aircraft-wings_.html

pr_g550_large.jpg

6272006First_mail_airplane_1925.jpg

OLD airplane

CURRENT airplane

long body
short body
small space
bigger space
aluminum
titanium
the wheel doesn't go inside while the flight
the wheel go inside while the flight
Doesn't have A/C
have A/C
weak engine
strong engine
not Comfortable
Comfortable
doesn't look good
look good
wings are along the airplane
travel for low and short distance
wings are at the right and left side.
travel high and far distance


This work had done by all of us!
current airplane